def test_clear_transactions_added_to_blockchain():
transaction_pool = TransactionPool()
transaction_1 = Transaction(Wallet(), "abcd", 10)
transaction_2 = Transaction(Wallet(), "abcd", 30)
transaction_pool.add_transaction(transaction_1)
transaction_pool.add_transaction(transaction_2)
blockchain = BlockChain()
blockchain.add_block([transaction_1.to_json(), transaction_2.to_json()])
assert transaction_1.id in transaction_pool.all_transactions
assert transaction_2.id in transaction_pool.all_transactions
transaction_pool.clear_transactions_added_to_blockchain(blockchain)
assert not transaction_1.id in transaction_pool.all_transactions
assert not transaction_2.id in transaction_pool.all_transactions
def test_calculate_balance():
blockchain = BlockChain()
wallet = Wallet()
assert wallet.calculate_balance(blockchain,
wallet.address) == STARTING_BALANCE
sent_amount = 100
transaction = Transaction(wallet, "abcd", sent_amount)
blockchain.add_block([transaction.to_json()])
assert wallet.calculate_balance(
blockchain, wallet.address) == STARTING_BALANCE - sent_amount
received_amount_1 = 100
received_1 = Transaction(Wallet(), wallet.address, received_amount_1)
received_amount_2 = 100
received_2 = Transaction(Wallet(), wallet.address, received_amount_2)
blockchain.add_block([received_1.to_json(), received_2.to_json()])
assert wallet.calculate_balance(blockchain, wallet.address) == STARTING_BALANCE - \
sent_amount + received_amount_1 + received_amount_2
from backend.wallet.wallet import Wallet
from backend.wallet.transaction import Transaction
from backend.wallet.transaction_pool import TransactionPool
from flask_cors import CORS
from waitress import serve
import logging
from paste.translogger import TransLogger
logger = logging.getLogger('waitress')
logger.setLevel(logging.INFO)
app = Flask(__name__)
CORS(app, resoources={r'/*': {'origins': 'http://*****:*****@app.route('/')
def route_home():
return "Home"
@app.route('/blockchain')
def route_blockchain():
return jsonify(blockchain.to_json())
def test_replace_chain_invalid_incoming_chain(blockchain_ten_blocks):
blockchain = BlockChain()
blockchain_ten_blocks.chain[1].hash = "tampered hash"
with pytest.raises(Exception,
match="Cannot replace. The incoming chain is invalid"):
blockchain.replace_chain(blockchain_ten_blocks.chain)
def test_blockchain():
blockchain = BlockChain()
assert blockchain.chain[0].hash == GENESIS_DATA['hash']
def test_replace_chain_not_longer(blockchain_ten_blocks):
blockchain = BlockChain()
with pytest.raises(
Exception,
match="Incoming chain must be longer than the local chain"):
blockchain_ten_blocks.replace_chain(blockchain.chain)
def test_replace_chain(blockchain_ten_blocks):
blockchain = BlockChain()
blockchain.replace_chain(blockchain_ten_blocks.chain)
assert blockchain.chain == blockchain_ten_blocks.chain
def blockchain_ten_blocks():
blockchain = BlockChain()
for i in range(5):
blockchain.add_block([Transaction(Wallet(), 'abcd', i).to_json()])
return blockchain
def test_add_block():
blockchain = BlockChain()
data = "test_data"
blockchain.add_block(data)
assert blockchain.chain[1].data == data
from backend.blockchain.blockchain import BlockChain
from backend.blockchain.block import Block
from backend.pubsub import PubSub
from django.contrib.auth.decorators import login_required
from backend.wallet.wallet import Wallet
from backend.wallet.transaction import Transaction
from django.views.decorators.csrf import csrf_exempt
from backend.wallet.transaction_pool import TransactionPool
from backend.products.assets import Assets
from backend.products.assets_transact import AssetsTransaction
from backend.products.assets_transpool import AssetsTransPool
from products.models import Products
from django.forms.models import model_to_dict
from django.contrib.auth.models import User
block = BlockChain()
sender_assets = Assets(block)
wallet = Wallet(block)
assets = Assets(block)
transaction_pool = TransactionPool()
assetTranPool = AssetsTransPool()
pubsub = PubSub(block, transaction_pool, assetTranPool)
# Create your views here.
@login_required
def index(request):
if assets.address != request.user.username:
assets.address = request.user.username
return render(request, 'index.html', {'Date': time.time()})